It refers to Islamic jurisprudence which encompasses the systematic study and application of principles derived from the Quran and Hadith to various aspects of human life. It involves legal reasoning by qualified scholars (fuqaha) to provide guidance on rituals, morality, social issues, economics, and criminal law. Fiqh is essential for Muslims to understand and apply Islamic principles in their daily lives, guiding ethical conduct, worship, and interpersonal relationships. Different schools of thought may have varying interpretations, contributing to diversity in legal opinions.